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+# UiTest
+
+>**NOTE**
+>
+>The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+
+
+## Modules to Import
+
+```
+import {UiDriver,BY,MatchPattern} from '@ohos.uitest'
+```
+
+## By
+
+The UiTest framework provides a wide range of UI component feature description APIs in the **By** class to filter and match components.
+The API capabilities provided by the **By** class exhibit the following features:
+
+- Allows one or more attributes as the match conditions. For example, you can specify both the **text** and **id** attributes to find the target component.
+
+- Provides multiple match patterns for component attributes.
+
+- Supports absolute positioning and relative positioning for components. APIs such as **isBefore** and **isAfter** can be used to specify the features of adjacent components to assist positioning.
+
+All APIs provided in the **By** class are synchronous. You are advised to use the static constructor **BY** to create a **By** object in chain mode, for example, **BY.text('123').type('button')**.
+
+### enum MatchPattern
+
+Enumerates the match patterns supported for component attributes.
+
+**System capability**: SystemCapability.Test.UiTest
+
+| Name       | Value  | Description        |
+| ----------- | ---- | ------------ |
+| EQUALS      | 0    | Equal to the given value.  |
+| CONTAINS    | 1    | Contain the given value.  |
+| STARTS_WITH | 2    | Start with the given value.|
+| ENDS_WITH   | 3    | End with the given value.|
+
+### By.text
+
+text(txt:string,pattern?:MatchPattern):By
+
+Specifies the text attribute of the target component. Multiple match patterns are supported.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name | Type        | Mandatory| Description                              |
+| ------- | ------------ | ---- | ---------------------------------- |
+| txt     | string       | Yes  | Component text, used to match the target component.|
+| pattern | MatchPattern | No  | Match pattern. The default value is **EQUALS**.  |
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.text('123') // Use the static constructor BY to create a By object and specify the text attribute 
+                           of the target component.
+```
+
+
+### By.key
+
+key(key:string):By;
+
+Specifies the key attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description           |
+| ------ | ------ | ---- | --------------- |
+| key    | string | Yes  | Component key.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.key('123') // Use the static constructor BY to create a By object and specify the key attribute
+                          of the target component.
+```
+
+
+### By.id
+
+id(id:number):By;
+
+Specifies the ID property of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description        |
+| ------ | ------ | ---- | ------------ |
+| id     | number | Yes  | Component ID.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.id(123) // Use the static constructor BY to create a By object and specify the ID attribute
+                       of the target component.
+```
+
+
+### By.type
+
+type(tp:string):By;
+
+Specifies the type property of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description        |
+| ------ | ------ | ---- | ------------ |
+| tp     | string | Yes  | Component type.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.type('button') // Use the static constructor BY to create a By object and specify the type attribute 
+                              of the target component.
+```
+
+
+### By.clickable
+
+clickable(b?:bool):By;
+
+Specifies the clickable attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                          |
+| ------ | ---- | ---- | ------------------------------ |
+| b      | bool | No  | Clickable status of the target component. The default value is **true**.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.clickable(true) // Use the static constructor BY to create a By object and specify the clickable attribute 
+                               of the target component.
+```
+
+
+### By.scrollable
+
+scrollable(b?:bool):By;
+
+Specifies the scrollable attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                      |
+| ------ | ---- | ---- | -------------------------- |
+| b      | bool | No  | Scrollable status of the target component. The default value is **true**.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.scrollable(true) // Use the static constructor BY to create a By object and specify the scrollable attribute 
+                                of the target component.
+```
+
+### By.enabled
+
+enabled(b?:bool):By;
+
+Specifies the enable attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                        |
+| ------ | ---- | ---- | ---------------------------- |
+| b      | bool | No  | Enable status of the target component. The default value is **true**.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.enabled(true) // Use the static constructor BY to create a By object and specify the enable attribute 
+                             of the target component.
+```
+
+### By.focused
+
+focused(b?:bool):By;
+
+Specifies the focused attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                    |
+| ------ | ---- | ---- | ------------------------ |
+| b      | bool | No  | Focused status of the target component. The default value is **true**.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.enabled(true) // Use the static constructor BY to create a By object and specify the focused attribute 
+                             of the target component.
+```
+
+### By.selected
+
+selected(b?:bool):By;
+
+Specifies the selected attribute of the target component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                          |
+| ------ | ---- | ---- | ------------------------------ |
+| b      | bool | No  | Selected status of the target component. The default value is **true**.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.selected(true) // Use the static constructor BY to create a By object and specify the selected attribute 
+                              of the target component.
+```
+
+### By.isBefore
+
+isBefore(by:By):By;
+
+Specifies the attributes of the component before which the target component is located.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description          |
+| ------ | ---- | ---- | -------------- |
+| by     | By   | Yes  | Attributes of the component before which the target component is located.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.isBefore(BY.text('123')) // Use the static constructor BY to create a By object and specify the attributes 
+                                        of the component before which the target component is located.
+```
+
+### By.isAfter
+
+isAfter(by:By):By;
+
+Specifies the attributes of the component after which the target component is located.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description          |
+| ------ | ---- | ---- | -------------- |
+| by     | By   | Yes  | Attributes of the component before which the target component is located.|
+
+**Return value**
+
+| Type| Description          |
+| ---- | -------------- |
+| By   | Returns the **By** object itself.|
+
+**Example**
+
+```
+let by = BY.isAfter(BY.text('123')) // Use the static constructor BY to create a By object and specify the attributes 
+                                       of the component after which the target component is located.
+```
+
+## UiComponent
+
+In **UiTest**, the **UiComponent** class represents a component on the UI and provides APIs for obtaining component attributes, clicking a component, scrolling to search for a component, and text injection.
+All APIs provided by this class use a promise to return the result and must be invoked using **await**.
+
+### UiComponent.click
+
+click():Promise<void>;
+
+Clicks this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    await button.click()
+}
+```
+
+### UiComponent.doubleClick
+
+doubleClick():Promise<void>;
+
+Double-clicks this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    await buttont.doubleClick()
+}
+```
+
+### UiComponent.longClick
+
+longClick():Promise<void>;
+
+Long-clicks this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    await button.longClick()
+}
+```
+
+### UiComponent.getId
+
+getId():Promise<number>;
+
+Obtains the ID of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type            | Description                     |
+| ---------------- | ------------------------- |
+| Promise<number>; | Promise used to return the component ID.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    let num = await button.getId()
+}
+```
+
+### UiComponent.getKey
+
+getKey():Promise<string>;
+
+Obtains the key of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type            | Description                      |
+| ---------------- | -------------------------- |
+| Promise<string>; | Promise used to return the component key.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    let str_key = await button.getKey()
+}
+```
+
+### UiComponent.getText
+
+getText():Promise<string>;
+
+Obtains the text information of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type            | Description                           |
+| ---------------- | ------------------------------- |
+| Promise<string>; | Promise used to return the text information of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    let text = await button.getText()
+}
+```
+
+### UiComponent.getType
+
+getType():Promise<string>;
+
+Obtains the type of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type            | Description                           |
+| ---------------- | ------------------------------- |
+| Promise<string>; | Promise used to return the component type.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    let type = await button.getType()
+}
+```
+
+### UiComponent.isClickable
+
+isClickable():Promise<bool>;
+
+Obtains the clickable status of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type          | Description                               |
+| -------------- | ----------------------------------- |
+| Promise<bool>; | Promise used to return the clickable status of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    if(await button.isClickable()) {
+        console.info('This button can be Clicked')
+    }
+    else{
+        console.info('This button can not be Clicked')
+    }
+}
+```
+
+### UiComponent.isScrollable
+
+isScrollable():Promise<bool>;
+
+Obtains the scrollable status of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type          | Description                               |
+| -------------- | ----------------------------------- |
+| Promise<bool>; | Promise used to return the scrollable status of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let scrollBar = await driver.findComponent(BY.scrollable(true))
+    if(await scrollBar.isScrollable()) {
+        console.info('This scrollBar can be operated')
+    }
+    else{
+        console.info('This scrollBar can not be operated')
+    }
+}
+```
+
+
+### UiComponent.isEnabled
+
+isEnabled():Promise<bool>;
+
+Obtains the enable status of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type          | Description                         |
+| -------------- | ----------------------------- |
+| Promise<bool>; | Promise used to return the enable status of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    if(await button.isEnabled()) {
+        console.info('This button can be operated')
+    }
+    else{
+        console.info('This button can not be operated')
+    }
+}
+
+```
+
+### UiComponent.isFocused
+
+isFocused():Promise<bool>;
+
+Obtains the focused status of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type          | Description                             |
+| -------------- | --------------------------------- |
+| Promise<bool>; | Promise used to return the focused status of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    if(await button.isFocused()) {
+        console.info('This button is focused')
+	}
+    else{
+        console.info('This button is not focused')
+	}
+}
+```
+
+### UiComponent.isSelected
+
+isSelected():Promise<bool>;
+
+Obtains the selected status of this component.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type          | Description                               |
+| -------------- | ----------------------------------- |
+| Promise<bool>; | Promise used to return the selected status of the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    if(await button.isSelected()) {
+        console.info('This button is selected')
+	}
+    else{
+        console.info('This button is not selected')
+    }
+}
+```
+
+### UiComponent.inputText
+
+inputText(text: string):Promise<void>;
+
+Enters text into this component (available for text boxes).
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type  | Mandatory| Description                     |
+| ------ | ------ | ---- | ------------------------- |
+| text   | string | Yes  | Text to be entered to the component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.type('button'))
+    await button.inputText('next page')
+}
+```
+
+### UiComponent.scrollSearch
+
+scrollSearch(by:By):Promise<UiComponent>;
+
+Scrolls on this component to search for the target component (available for lists).
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description                |
+| ------ | ---- | ---- | -------------------- |
+| by     | By   | Yes  | Attributes of the target component.|
+
+**Return value**
+
+| Type                 | Description                               |
+| --------------------- | ----------------------------------- |
+| Promise<UiComponent>; | Promise used to return the target component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let scrollBar = await driver.findComponent(BY.scrollable(true))
+    let button = await scrollBar.scrollSearch(BY.text('next page'))
+}
+```
+
+## UiDriver
+
+The **UiDriver** class is the main entry to the **uitest** test framework. It provides APIs for features such as component matching/search, key injection, coordinate clicking/sliding, and screenshot.
+All APIs provided by this class, except for **UiDriver.create()**, use a promise to return the result and must be invoked using **await**.
+
+### UiDriver.create
+
+static create():UiDriver;
+
+Creates a **UiDriver** object and returns the object created. This API is a static API.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Return value**
+
+| Type   | Description                  |
+| ------- | ---------------------- |
+| UiDrive | Returns the **UiDriver** object created.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+}
+```
+
+### UiDriver.delayMs
+
+delayMs(duration:number):Promise<void>;
+
+Delays this **UiDriver** object within the specified duration.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name  | Type  | Mandatory| Description      |
+| -------- | ------ | ---- | ---------- |
+| duration | number | Yes  | Duration of time.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.delayMs(1000)
+}
+```
+
+### UiDriver.findComponent
+
+findComponent(by:By):Promise<UiComponent>;
+
+Searches this **UiDriver** object for the target component that has the given attributes.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description              |
+| ------ | ---- | ---- | ------------------ |
+| by     | By   | Yes  | Attributes of the target component.|
+
+**Return value**
+
+| Type                 | Description                           |
+| --------------------- | ------------------------------- |
+| Promise<UiComponent>; | Promise used to return the found component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let button = await driver.findComponent(BY.text('next page'))
+}
+```
+
+### UiDriver.findComponents
+
+findComponents(by:By):Promise<Array<UiComponent>>;
+
+Searches this **UiDriver** object for all components that match the given attributes.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description              |
+| ------ | ---- | ---- | ------------------ |
+| by     | By   | Yes  | Attributes of the target component.|
+
+**Return value**
+
+| Type                        | Description                                 |
+| ---------------------------- | ------------------------------------- |
+| Promise<Array<UiComponent>>; | Promise used to return a list of found components.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    let buttonList = await driver.findComponents(BY.text('next page'))
+}
+```
+
+### UiDriver.assertComponentExist   
+
+assertComponentExist(by:By):Promise<void>;
+
+Asserts that a component that matches the given attributes exists on the current page. If the component does not exist, the API throws a JS exception, causing the current test case to fail.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type| Mandatory| Description              |
+| ------ | ---- | ---- | ------------------ |
+| by     | By   | Yes  | Attributes of the target component.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.assertComponentExist(BY.text('next page'))
+}
+```
+
+### UiDriver.pressBack
+
+pressBack():Promise<void>;
+
+Presses the Back button on this **UiDriver** object.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.pressBack()
+}
+```
+
+### UiDriver.triggerKey
+
+triggerKey(keyCode:number):Promise<void>;
+
+Triggers the key of this **UiDriver** object that matches the given key code.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name | Type  | Mandatory| Description     |
+| ------- | ------ | ---- | --------- |
+| keyCode | number | Yes  | Key code.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.triggerKey(123)
+}
+```
+
+### UiDriver.click
+
+click(x:number,y:number):Promise<void>;
+
+Clicks a specific point of this **UiDriver** object based on the given coordinates.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type         | Mandatory| Description                                       |
+| ------ | ------------- | ---- | ------------------------------------------- |
+| x,y    | number,number | Yes  | Coordinate information of a specific point in the (number,number) format.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.click(100,100)
+}
+```
+
+### UiDriver.doubleClick
+
+doubleClick(x:number,y:number):Promise<void>;
+
+Double-clicks a specific point of this **UiDriver** object based on the given coordinates.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type         | Mandatory| Description                                       |
+| ------ | ------------- | ---- | ------------------------------------------- |
+| x,y    | number,number | Yes  | Coordinate information of a specific point in the (number,number) format.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.doubleClick(100,100)
+}
+```
+
+### UiDriver.longClick
+
+longClick(x:number,y:number):Promise<void>;
+
+Long-clicks a specific point of this **UiDriver** object based on the given coordinates.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name| Type         | Mandatory| Description                                       |
+| ------ | ------------- | ---- | ------------------------------------------- |
+| x,y    | number,number | Yes  | Coordinate information of a specific point in the (number,number) format.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.longClick(100,100)
+}
+```
+
+### UiDriver.swipe
+
+swipe(startx:number,starty:number,endx:number,endy:number):Promise<void>;
+
+Swipes from the start point to the end point of this **UiDriver** object based on the given coordinates.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name       | Type         | Mandatory| Description                                       |
+| ------------- | ------------- | ---- | ------------------------------------------- |
+| startx,starty | number,number | Yes  | Coordinate information of the start point in the (number,number) format.|
+| endx,endy     | number,number | Yes  | Coordinate information of the end point in the (number,number) format.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.swipe(100,100,200,200)
+}
+```
+
+### UiDriver.screenCap
+
+screenCap(savePath:string):Promise<bool>;
+
+Captures the current screen of this **UiDriver** object and saves it as a PNG image to the given save path.
+
+**Required permissions**: none
+
+**System capability**: SystemCapability.Test.UiTest
+
+**Parameters**
+
+| Name  | Type  | Mandatory| Description        |
+| -------- | ------ | ---- | ------------ |
+| savePath | string | Yes  | File save path.|
+
+**Example**
+
+```
+async function demo() {
+    let driver = UiDriver.create()
+    await driver.screenCap('/local/tmp/')
+}
+```